It is much too early to discuss whether Iran closes Striat of Hormuz or not. It seems like you are assuring the Pentagon “Go ahead and nothing would happen”.  Let’s count the achievements of American forces in the east. Over the decades, America has terribly failed to bring peace between Arabs and Israel. Withdrawal of American forces from Iraq after a big failure. A comprehensive disappointment to pentagon in Afghanistan. Supply route of Pakistan is getting dry day by day and no easy alternatives are available (not to mention the recent statements of Russian high ups regarding Mrs. Clinton’s interference in Russia’s internal matters). A changed and vibrant Arab up-surge. Winds are very much against USA and we yet to see how far pentagon can stretch.